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2017 | 131 | 4 | 1165-1167

Article title

Mechanochemical Reduction of Chalcopyrite CuFeS₂: Changes in Composition and Magnetic Properties

Content

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Languages of publication

EN

Abstracts

EN
High-energy milling of sulphides with a reactive metal in so-called mechanochemical reduction mode can lead to products in nanorange and to composition which simplifies the following metallurgical processing. Chalcopyrite CuFeS₂, a ternary semiconductor with antiferromagnetic properties represents promising candidate as an advanced material for use in inexpensive nanoelectronics (solar cells, magnetic area), as well as copper ore source in metallurgical operations. In this work, the process of mechanochemical reduction of chalcopyrite with elemental iron is studied. The composition and properties of nanopowder prepared by high-energy milling were analyzed by X-ray diffraction and magnetic measurements. Most of the reaction takes place during 30 min with chalcocite Cu₂S and troilite FeS as the only reaction products. The magnetic investigations reveal significant increase of saturation magnetization as a result of milling. Unlike the conventional high-temperature reduction of chalcopyrite, the mechanochemical reduction is fast and ambient temperature and atmospheric pressure are sufficient for its propagation.

Keywords

EN

Year

Volume

131

Issue

4

Pages

1165-1167

Physical description

Dates

published
2017-04

Contributors

author
  • Institute of Geotechnics, SAS, Watsonova 45, 04001 Košice, Slovakia
author
  • Institute of Geotechnics, SAS, Watsonova 45, 04001 Košice, Slovakia
author
  • Institute of Geotechnics, SAS, Watsonova 45, 04001 Košice, Slovakia
author
  • Institute of Experimental Physics, SAS, Watsonova 47, 04001 Košice, Slovakia
author
  • Institute of Geotechnics, SAS, Watsonova 45, 04001 Košice, Slovakia
author
  • K.I. Satpayev Kazakh National Research Technical University, Satpayev Str. 22a, 050013 Almaty, Kazakhstan
author
  • K.I. Satpayev Kazakh National Research Technical University, Satpayev Str. 22a, 050013 Almaty, Kazakhstan
author
  • Al-Farabi Kazakh National University, Al-Farabi Av. 71, 050040 Almaty, Kazakhstan

References

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  • [6] P. Baláž, Mechanochemistry in Nanoscience and Minerals Engineering, Springer, Berlin 2008
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  • [9] L.J. Horwood, M.G. Townsend, A.H. Welster, J. Solid State Chem. 17, 35 (1976), doi: 10.1016/0022-4596(76)90198-5

Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.bwnjournal-article-appv131n4182kz
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